RU2629234C2 - Device for skin care - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: skin care device comprises a body, a shaft located in the body having a longitudinal axis "A" and an end for skin care portion reception, and a driving means adapted to rotate the shaft about its longitudinal axis and oscillate the shaft in the direction along the longitudinal axis. The drive means comprises a rotary drive unit for shaft rotation and an oscillator for shaft oscillation. The oscillator is located around the shaft so that the shaft is able to rotate relative to the oscillator. The oscillation generator comprises a solenoid and a magnetic flux assembly configured to move along the shaft relative to the solenoid.

EFFECT: invention allows to change the rotational motion speed and the oscillating motion frequency by the user according to their preferences.

13 cl, 5 dwg, 1 tbl

Description

FIELD OF TECHNOLOGY

The present invention relates to a device for skin care by cleaning, exfoliating dead cells and massaging the skin of the user.

BACKGROUND OF THE INVENTION

Known devices for cleaning, exfoliating dead cells and massaging the skin. These devices comprise a brush or skin care part of another type that is rotatably formed. In use, a rotating brush is applied to the skin, and the rotational movement stimulates microcirculation, removes impurities and dead skin cells, thereby giving the skin of the user a feeling of smoothness and purity.

A skin care device is also known in which the brush is vibrationally formed in addition to rotation, which enhances the feeling of clean and well-groomed skin. However, it is not possible for the user to independently change the rotational speed and the frequency of the vibrating movement, and therefore, the user cannot adjust the device according to his personal preferences.

SUMMARY OF THE INVENTION

The aim of the invention is to provide a skin care device that substantially mitigates or eliminates the aforementioned problems.

In accordance with the present invention, there is provided a skin care device comprising a body, a shaft located in the body having a longitudinal axis and an end for receiving the skin care part, and a drive means formed to rotate the shaft around its longitudinal axis and oscillation in the direction along the longitudinal axis, while the drive means comprises a rotary drive assembly for rotating the shaft and an oscillation generator for oscillating movement of the shaft, the oscillator being located around ala so that the shaft is rotatable relative to the oscillator, the oscillator comprises a coil and a unit for the magnetic flux, and a unit for the magnetic flux can be displaced along the shaft relative to the solenoid.

The above construction provides an advantage in that in use, when the skin care part is fixed to the shaft end, the skin care part moves substantially perpendicular to the skin, which enhances the cleansing and massage effect on the skin. In addition, the oscillation generator is not connected to the rotary drive assembly, and therefore, the oscillatory movement can be controlled independently of the rotation of the shaft.

In a preferred embodiment, the rotary drive assembly and the oscillation generator are formed so that the rotation speed and the oscillation frequency of the shaft can be changed independently of one another in response to user input.

Therefore, in a preferred embodiment, the user can adjust the frequency and speed of rotation according to his personal preference.

In a preferred embodiment, the magnetic flux assembly comprises internal and external flux concentrators and a magnet located between them.

The design of the magnetic flux assembly concentrates the magnetic field generated by the magnet.

In one embodiment, the external flow concentrator is made of a main section containing a peripheral side section, and the internal flow concentrator is accommodated within the peripheral side section, a magnet is located between the internal flow concentrator and the main section, and a clearance is formed between the internal flow concentrator and the peripheral side section solenoid.

For convenience, the device further comprises a first and second support supporting the shaft, while the magnetic flux assembly is located around the shaft between the first and second supports and the solenoid is fixed to one of the supports.

In a preferred embodiment, the magnetic flux assembly is held between the first and second supports in such a way that it cannot accidentally fall off the shaft.

For convenience, the shaft is held by the first and second bearings in such a way that the shaft is able to rotate relative to the supports around the longitudinal axis, but is blocked from moving along the longitudinal axis relative to at least one of the supports.

This design allows axial movement of the magnetic flux assembly to be transmitted to the shaft when the magnetic flux assembly impacts at least one of the supports.

The shaft may include an annular recess in which one of the supports is located in order to block the shaft from moving along the longitudinal axis relative to the support, which is located in the recess.

In a preferred embodiment, when the magnetic flux assembly impacts the support located in the recess, the support moves axially and transmits axial movement to the shaft.

One of the supports can be formed with an E-shaped retainer, which is located in an annular recess.

This provides an advantage in that the axial movement of the magnetic flux assembly is transmitted to the support formed with the E-shaped retainer, and since the E-shaped retainer is located in the recess, the axial movement is transmitted to the shaft.

In a preferred embodiment, one of the supports is formed with a stopper, which is impacted by the node for magnetic flux when it vibrates.

Since the stopper perceives the impact of the magnetic flux assembly, the wear of the support formed with the stopper is effectively reduced.

In one embodiment, a spring is disposed between the first or second support and the magnetic flux assembly to mitigate the impact when the magnetic flux assembly vibrates.

This design effectively attenuates the acoustic noise produced when the magnetic flux assembly impacts the first or second support.

The device further comprises a power source supplying power to the drive means.

In a preferred embodiment, the design allows a single power source to power the drive means, reducing the size and weight of the device.

In one embodiment, the device further comprises an inverter for converting the current supplied by the power source to alternating current.

This leads to such a change in the polarity of the solenoid that it alternates between the attraction and repulsion to the magnet / from the magnet.

For convenience, the device may include a frequency converter for changing the frequency of the alternating current.

In a preferred embodiment, the frequency converter is configured to change the frequency in response to user input so that the force of the oscillatory movement of the shaft and, therefore, the brushes can be changed according to the user's personal preference.

The foregoing and other aspects of the invention will be apparent from the explanation with reference to the embodiments described below.

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments of the invention are described hereinafter by way of example only, with reference to the accompanying drawings, in which:

FIG. 1 is a side view of an embodiment of a skin care device, wherein the body of the device is partially removed;

FIG. 2 is an enlarged side view of the embodiment shown in FIG. one;

FIG. 3 is a sectional view of a shaft, an oscillation generator, and a gear transmission;

FIG. 4 is a side view of the shaft shown in FIG. 3; and

FIG. 5 is a schematic sectional view of half of the oscillation generator shown in FIG. 3.

DETAILED DESCRIPTION OF EMBODIMENTS

In FIG. 1 shows a skin care device 1. The device 1 comprises a housing 2 having a first grip region 4, which is suitable for holding by the user, and a second region 5 of the head, formed with the possibility of connection with the brush 3.

The first region 4 contains a battery 7. The battery 7 may be rechargeable. It should be understood that you can use an alternative power source, for example, the device may allow connection to a wall outlet network power source. The battery 7 energizes the drive means comprising an oscillation generator 26 and a rotary drive assembly located in the second region 5. The oscillation generator 26 is formed to oscillate the shaft 14 located in the housing along its longitudinal axis, and the rotary drive assembly is rotatably formed 14 around its longitudinal axis. The housing 2 is additionally equipped with a working switch (not shown) for switching the device on / off and for switching the device to various oscillation and rotation operating modes, as is explained in detail below.

The shaft 14 is formed with the possibility of connection with the brush 3 and is located in the second region 5 of the housing 2. The shaft is fixed and mounted on the frame 11. The frame 11 is more clearly shown in FIG. 3 and comprises first and second legs, called front and rear legs 12, 13, which are spaced one from the other so as to provide room for the oscillation generator 26. The shaft 14 is rotatably formed relative to the front and rear bearings 12, 13, as becomes apparent from the following description.

The shaft 14 is shown in more detail in FIG. 4, and the shaft generally has a rod shape and a longitudinal axis “A”. The shaft 14 is preferably made of stainless steel and comprises a corrugated end 15 that is formed with ribs 16 extending in the longitudinal direction “A” of the shaft 14. When the shaft is located in the housing 2, the corrugated end 15 protrudes from the second region 5 of the housing 2, where it is connected with corresponding recesses 17 formed in the brush 3 (see Fig. 2). The recess 17 of the brush 3 is formed of plastic, and the brush is fixed to the grooved end 15 of the shaft 14 in a tight fit so that the plastic of the groove is plastically deformed between the ribs 16. The ribs 16 of the grooved end 15 improve the connection between the brush 3 and the shaft 14 when the ribs are mechanically engaged with a recess 17 of the brush 3 in the direction of rotation around the longitudinal axis “A” of the shaft 14. It should be understood that the present invention is not limited to a brush connected to the housing, since any alternative can be connected to the grooved end tive portion of the skin care, such as a cotton pad or cushion which has a cleansing, peeling and massaging action.

A seal (not shown) is provided between the shaft 14 and the housing 2 near the corrugated end 15 to form a waterproof gasket between the shaft 14 and the housing 2.

At the opposite end 19 from the corrugated end 15, the shaft 14 is formed with a cut portion 18 along the axial direction, so that the cross-sectional profile of the shaft transversely to the longitudinal axis has a “D-shaped" shape, as can be understood from FIG. 4. This end 19 is located in the corresponding center of the gear 20 (see Fig. 2 and 3), which forms part of the rotary drive assembly.

The rotary drive assembly comprises an electric motor 8, which is located in the housing 2 between the first and second regions 4, 5. The electric motor 8 comprises a motor shaft 9, as best seen in FIG. 2, while the shaft 9 of the engine can be driven in two opposite directions of rotation and with different speeds of rotation. The rotary drive assembly further comprises a gear 21, which is connected to the shaft 9 of the motor of the electric motor 8. The rotational movement of the rotary drive assembly is caused by the electric motor 8, which rotates the motor shaft 9. The shaft 9 of the engine, in turn, rotates a gear 21 including a gear 20 with which the shaft 14 is connected so that the shaft 14 rotates itself. This question is not explained in any more detail, since it is believed that it should be well-known ordinary knowledge of a specialist. It should be understood that the gear may contain one or many gears, depending on the design of the electric motor 8 and the shaft 14.

As described above, the shaft 14 is supported by the front and rear bearings 12, 13 of the frame 11. The rear bearing 13 supports the shaft 14 in an area adjacent to the cut section 18 so that the shaft can rotate and move axially relative to the rear support 13. The shaft 14 is axially displaceable relative to the gear 20 in which it is located. The front support 12 is formed with an E-lock 23 (see Fig. 3), which is located in the annular groove 24 (see Fig. 4), formed on the shaft near the corrugated end 15 so that the shaft 14 can rotate, but is blocked from moving in the axial direction relative to the front support 12. In an alternative, not shown embodiment, the front support is not formed with an E-shaped latch, and the front support is formed with the possibility of location directly in the annular groove 24.

The front support 12 has a flexible connection with the frame 11 to allow the shaft to move between the front and rear positions when the shaft vibrates along its longitudinal direction.

Between the front and rear supports 12, 13 of the frame 11 is a node 25 for the magnetic flux, which forms part of the oscillation generator 26. The magnetic flux assembly 25 is formed on a sleeve 27 that spans the shaft 14. The sleeves 27 and the corresponding supporting surface of the shaft 14 allow the shaft 14 to rotate freely relative to the magnetic flux assembly 25.

The magnetic flux assembly 25 will now be described with reference to FIG. 3 and 5. The magnetic flux assembly comprises internal and external flux concentrators 28, 29, preferably made of soft magnetic material, for example, mild steel. An external flow concentrator 29 is formed from a circular main section 31 containing a peripheral side section 32. The internal flow concentrator 28 is disk-shaped, and although not shown, it should be understood that the internal flow concentrator 28 can also be formed with a peripheral side section. An internal flow concentrator is located inside the external flow concentrator 29, and a concentric annular gap 34 is formed between the peripheral edge 35 of the internal flow concentrator and the peripheral side section 32 of the external flow concentrator 29. The space is also formed between the flat surface 36 of the internal flow concentrator 28 and the annular main section 31 of the external hub 29 flow. Both the circular section 31 of the external flow concentrator 29 and the internal flow concentrator 28 are formed with a central hole (not shown) through which the shaft 14 extends.

The magnetic flux assembly 25 further comprises a permanent magnet 37 located in a space formed between the flat surface 36 of the internal flux concentrator 28 and the round main section 31 of the external flux concentrator 29. The magnet 37 is preferably made of neodymium ferroboron and also has the shape of a disk formed with such a central hole (not shown) that the shaft 14 can extend through it. The magnet 37 has a diameter corresponding to the inner flux concentrator 28, so that an annular gap 34 also extends between the magnet 37 and the peripheral side section 32 of the outer flux concentrator 29.

As shown in FIG. 5, the polarity of magnet 37 is constant, and the north and south poles are represented as “N” and “S”. The magnetic field 38 created by the magnet 37 is depicted by lines 30. The magnetic field 38 is oriented essentially radially relative to the longitudinal axis “A” of the shaft 14 around which the magnet 37 is located, and since the magnet 37 is located between the inner and outer hubs 28, 29 of the flow, most of the magnetic field 38 created by the magnet 37 is contained within the annular gap 34, so that a large magnetic force is generated.

In addition to the node 25 for the magnetic flux, the oscillation generator 26 further comprises a solenoid 39 fixed to the rear support 13 and placed in the annular gap 34. The solenoid 39 contains numerous turns of insulated wire 40 and is located so that it is concentric with the magnet 37 and hubs 28, 29 flux, however, there is no contact between the solenoid 39 and the magnetic flux assembly 25. In a preferred embodiment, the solenoid 39 is made of a copper wire with a diameter of 0.15 mm, having a resistance of 10.2 R and forming a 220-turn winding.

The solenoid 39 is electrically connected to the battery 7 through an inverter (not shown). The inverter converts the direct current (dc) supplied by the battery 7 into alternating current (ac). The alternating current flowing through the wire winding 39 forms a magnetic field having an alternating polarity that interacts with the constant magnetic field of the magnet 37 located between the internal and external flux concentrators 28, 29. As a result of the alternating polarity of the solenoid 39, the magnet 37 and the solenoid 39 alternate between the attraction and repulsion of each other.

As described above, the inner and outer flux concentrators 28, 29 and the magnet 37 are mounted on the sleeve 27 so that the shaft 14 can freely rotate relative to them. This design also allows the sleeve 27 and the node 25 for magnetic flux to move in the axial direction "A". Since the solenoid 39 is fixed to the rear support 13 and its polarity is alternating, the sleeve 27 and the magnetic flux assembly 25 move to and from the solenoid 39 along the shaft 14. This generates a vibrational or oscillatory movement that is transmitted to the front support 12 by E- figurative latch 23 and the rear support 13 by means of stoppers 41, as will be explained later.

When an electric current is passed through the solenoid 39 in a direction that creates a magnetic field that repels the magnetic flux assembly 25, the magnetic flux assembly 25 moves rapidly along the shaft 14 to the front support 12. The forward movement of the magnetic flux assembly is delayed when it encounters an E-shaped retainer 23. This creates an axial force that is transmitted to the shaft 14 by means of the front support 12, which bends forward, thereby causing the shaft 14 to move to the front position. When the direction of the current in the solenoid 39 is reversed so that the generated magnetic field reverses its polarity and thereby attracts the magnetic flux assembly, the magnetic flux assembly 25 quickly moves to the solenoid 39 fixed to the rear support 13 and is restrained by a stop 41 formed on the rear support 13. As a result of this, in combination with the user pressing the brush against the skin, the shaft 14 moves to the rear position. Since the direction of the current is variable, the node for magnetic flux oscillates or vibrates along the shaft 14 and impacts the E-clamp 23 of the front support 12 and the stopper 41 on the rear support 13, which leads to vibrations or vibrations of the shaft 14 in its axial direction longitudinal axis "A".

In order to attenuate the noise resulting from the impact of the magnetic flux assembly 25 on the E-shaped retainer 23 and the stoppers 41, a spring can be arranged at either end or both ends of the external concentrator 29 of the flow that impacts the E-shaped retainer 23 and the stoppers 41 (not shown), for example, a curved spring disc. The springs reduce the momentum of the magnetic flux assembly 25, however, sufficient force is transmitted to the E-shaped retainer 23 and stoppers 41 so that the shaft 14 moves between its front and rear positions. The springs are preferably made of metalloid, artificially aged beryllium-copper alloy of high strength. The design spring has an elastic spring characteristic of 3.2 N / mm, and therefore, the elastic spring characteristic at a frequency of 80 Hz is 2.8 N / mm, and the elastic spring characteristic at a frequency of 110 Hz is 5.3 N / mm.

The device 1 further comprises a frequency converter (not shown) that changes the frequency of the alternating current so that the resulting oscillations of the magnetic flux assembly 25 can be changed. In a preferred embodiment, the frequency converter is configured to convert the frequency between two modes; 80 Hz first mode and 110 Hz second mode. A higher frequency produces less acoustic noise than a low-frequency mode, since the change in the direction of the magnetic flux assembly is faster, which prevents the impact of the magnetic flux assembly on the E-shaped latch 23 and stoppers 41 with so much movement compared to low frequency.

The fact that the components of the oscillation generator 26 are not mechanically connected to the shaft 14 results in independent control of the oscillatory motion relative to the rotational motion. Therefore, the device 1 can be configured to operate in various modes. For example, a working switch may have eight settings corresponding to eight operating modes, which are based on three rotation speeds: 0, 180 and 250 rpm, and three vibration frequencies; 0, 80 and 110 Hz. The combinations of modes are listed in the table below.

Work mode Rotation rpm Oscillations, Hz one 180 80 2 250 110 3 180 0 four 250 0 5 0 80 6 0 110 7 180 110 8 250 80

The device further comprises a controller (not shown), which is configured to control different operating modes in response to user input. For example, when the user switches the switch to the first installation so that the device is in its first operating mode, the controller controls the battery 7 so that it supplies current to the electric motor 8, and controls the electric motor 8 so that the shaft 14 and the brush 3 rotate at a speed 180 rpm At the same time, the controller controls the battery 7 so that it supplies current to the oscillation generator 26. The controller additionally controls the inverter to convert direct current to alternating current. The controller also sets the frequency converter to 80 Hz. As a result, the oscillation generator 26 also oscillatory moves the shaft 14 and the brush 3 in the axial direction with a frequency of 80 Hz.

If the user subsequently switches the operating mode to operating mode 5 by pressing or moving the switch, the controller turns off the current supply from the battery 7 to the electric motor 8, but continues to control the oscillation generator 26 so that the shaft 14 and the brush 3 move only in the axial direction. If the user subsequently switches the operating mode to operating mode 6, the controller controls the frequency converter so that it increases the frequency of the alternating current, resulting, as a result, in amplification of the oscillations of the shaft 14.

It should be understood that the device is not limited to the eight operating modes. The device may contain more or less oscillation frequencies and / or rotational speeds, so that the device contains more or less operating modes.

In an alternative embodiment not shown, the device comprises two separate switches, a first switch for controlling the rotation of the shaft 14 and the brush 3 and a second switch for controlling the vibrations of the shaft 14 and the brush 3. The first switch may have four settings corresponding to four rotational speeds; 0, 180, 220 and 250 rpm, and the second switch can also have four settings corresponding to the four vibration frequencies; 0, 80, 100 and 110 Hz. Thus, the device is configured to have a total of 15 operating modes. In a preferred embodiment, the user can control the two switches independently of one another so that he can obtain the desired combination of rotational and oscillatory movements of the brush 3. It should be understood that two separate switches are not limited to having four settings for each, for example, each switch can be configured with the possibility of having three settings for each so that the device has a total of eight operating modes.

When the device 1 is driven in an oscillatory mode, the shaft 14, as well as the brush 3, vibrate or move in a direction parallel to the longitudinal axis “A” of the shaft 14. Therefore, when the device is used, the brush 3 and the shaft 14 vibrate or move essentially perpendicular to the skin, which enhances the cleansing and massaging effects on the skin.

In a preferred embodiment, the configuration of the above device allows independent adjustment of the vibrational movement and rotational movement according to user preference.

It should be understood that the device 1 is not limited to the content of the brush 3, the device may contain an alternative part for skin care, having a rough surface for exfoliation or a surface containing massage protrusions.

In an alternative, not shown embodiment, the oscillation generator 26 is configured in reverse so that the solenoid 39 is mounted on the front support 12 and the shaft 14 is formed with a groove in which the rear support 13 is located.

In yet another embodiment, both the front and rear legs 12, 13 are flexibly connected to the frame 11, and the shaft 14 is formed with a second annular groove in which the rear leg 13 is placed so that the impact interaction of the oscillator and the front and rear legs 12 , 13 causes the shaft 14 to oscillate or move axially between the front and rear positions.

It should also be understood that the internal and external flow concentrators 28, 29, the permanent magnet 37, and the solenoid 39 are not limited to having a circular cross section transverse to the longitudinal axis of the shaft. For example, all of them may have a square or rectangular section.

It should be understood that the term “comprising” does not exclude other elements or steps, and that the singular character (as an indefinite article in the original) does not exclude the plural. A single processor can perform the functions of several elements listed in the claims. The obvious fact that some features are mentioned in mutually different dependent dependent claims does not mean that it is not possible to use a combination of these features in a suitable case. No position in the claims can be considered limiting the scope of the invention.

Although the claims are formulated herein in relation to specific combinations of features, it should be understood that the scope of the disclosure of the present invention also includes any new features or any new combination of features disclosed in this application either explicitly or indirectly, or any generalization thereof, regardless of whether or not this applies to the same invention as claimed so far in any claim, and whether or not this eliminates any or all of the same technical claims oblemy as the main invention. The applicants of this application hereby caution that for such features and / or combinations of features, a new claims may be formulated in the process of consideration of this application or any derivative of it, an additional application.

Claims (13)

1. A skin care device comprising a housing (2), a shaft (14) located in the housing (2) having a longitudinal axis "A" and an end for receiving a skin care portion (3), and a drive means made with the ability to bring the shaft into rotation around its longitudinal axis and to oscillate the shaft in a direction along the longitudinal axis, while the drive means comprises a rotary drive assembly for rotating the shaft (14) and an oscillation generator (26) for the oscillatory movement of the shaft, the generator (26) oscillation is located around the shaft (14) so that about the shaft is able to rotate relative to the oscillation generator, while the oscillation generator (26) contains a solenoid (39) and a node (25) for magnetic flux, while the node (25) for magnetic flux is arranged to move along the shaft (14) relative to the solenoid ( 39). 2. The device according to claim 1, wherein the rotary drive assembly and the oscillation generator are configured such that the rotation speed and the oscillation frequency of the shaft can be changed independently of each other in response to user input. 3. The device according to claim 1, in which the node (25) for the magnetic flux contains internal and external concentrators (28, 29) of the flux and a magnet (37) located between them. 4. The device according to claim 3, in which the external concentrator (29) of the stream is made of the main section (31) containing the peripheral side section (32), and the internal concentrator (28) of the stream is located inside the peripheral side section (32), while a magnet (37) is located between the internal flow concentrator and the main section (31), and a gap (34) is formed between the internal flow concentrator and the peripheral side section (32) to accommodate the solenoid (39). 5. The device according to claim 1, further comprising a first and second support (12, 13) holding the shaft (14), while the magnetic flux assembly (25) is located around the shaft between the first and second supports, while the solenoid (39) attached to one of the supports. 6. The device according to claim 5, in which the shaft (14) is held by the first and second bearings (12, 13) so that the shaft (14) is able to rotate relative to the supports around the longitudinal axis, but is blocked from moving along the longitudinal axis relative to at least at least one of the pillars. 7. The device according to claim 6, in which the shaft (14) contains an annular recess (24) in which one of the supports (12) is located in order to prevent the shaft from moving along the longitudinal axis relative to the support located in the recess. 8. The device according to claim 7, in which one of the supports (12, 13) is made with an E-clamp (23), which is located in an annular recess (24). 9. The device according to any one of paragraphs. 5-8, in which one of the supports (12, 13) is made with a stopper (41), which is impacted during vibrational movement of the node for magnetic flux. 10. The device according to any one of paragraphs. 5-8, in which a spring is located between the first or second support (12, 13) and the magnetic flux assembly (25) in order to attenuate the shock when the magnetic flux assembly oscillates. 11. The device according to any one of paragraphs. 1-8, further comprising a power source (7) supplying power to the drive means. 12. The device according to claim 11, further comprising an inverter for converting the current supplied by the power source (7) to alternating current. 13. The device according to p. 12, further comprising a frequency converter for changing the frequency of the alternating current.

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